[Problem]To provide a production method capable of simply and efficiently producing a fructose-added carbohydrate using β-fructofuranosidase.[Solution]A method for producing a fructose-added carbohydrate, said method having a step in which a receptor substrate and a hydrate containing terminal fructose residue are brought into contact with: Escherichia coli expressing an anchor protein for expression on a cell surface and β-fructofuranosidase as one polypeptide, a composition including dead cells of the expressing Escherichia coli, or a polypeptide obtained from the expressing Escherichia coli and including an amino acid sequence of β-fructofuranosidase.